Machine for removing armature insulation



' H. H. EATON 1,860,310

MACHINE FOR REMOVINGARMATURE INSULATION May- 24, 1932.

Filed April 26. 1928 '5 sheets-sheet 1 gmntoz //2 f/d/"f/Sd/f 0/0/1 May24, 1932. H. EATON 1,850,310

MACHINE FOR REMOVING ARMATURE INSULATION Filed April 26. 1928, 3Sheets-Sheet 2 gmmuu Patented May 24, 1932 l UNITED 'STATES HARRISON H.EATON, onToLEno, onro, AssIeNon T{III-TEE;ELECTRIC245111130sIlI'lE-COMEv P EN ' IAZN'Y, or TOLEDO, oHIo,A CORPORATION 0F onzroh 1 ivmcnmnron REMOVING ARMA'rUnE rnsuLATIonApplication filed April 26,

lhis invention relates toa machine for removing material ifrom articlesof manufacture and particularly to means for removing the surplusinsulating material remaining upon the periphery of an armature afterthe coils have been inserted? therein. up I In the manufacture-ofarmaturesifor generators or other dynamo electric, machines andparticularly the-smaller sizes thereof, 1t

is the practice to insert a continuous strip of insulating paper; orother material into the slots of an armature, the paper extending overor covering "the exterior portions of the teeth formed by the spacedslots The, coils are theninserted' in the slots in the usual manner andthe insulation lying upon the armature teeth is subsequently removed bya cutting or shearing operation. These meth Another object of theinventlonisthe prol vision of a machine of this. character which willremove the surplus insulation from the teeth of the'armature in acomparatively I parent from the followingdes'cription, in whichreference is had to the accompanying short spaceof time thus materiallyredncing the manufacturing costs of armatures.

Still another object'is the provision of a machine of this characterwhich simple" in its operation, notllahle to get out of order and whichmay be safely operated by inexperienced workmen; r r v, v j Otherobjects and'v-advantagesfwill be apdrawings: illustrating a preferredembodi: ment of my inventlon wheremithe similar reference" numeralsrefer to similar parts throughout the several views. f In the drawingsFigure I is a side machine of my invention.

' construction,

elevational view of the ordama-ged brushesb.

192s. seriain 273,086. I Figure II is a top plan shown in Flgure I.-

View of themachine I v FigureI-II is a detail longitudinalsectiohal viewof an armature. V i V Figure IV is a longitudinal sectional view throughthe I the line IV-IV: of Figure II."

. FigureV is asectional detail one of the brushes forming chi11e- 'i' ji or Figure VI is an end view of the parts shown'in Figure Vs insulationfrom armatures,wbut it is *to be a uses machine taken substantially on fview through a partofthe ma-" 1 Referring to the drawings in Ihave shownmy invention as used for removing 7' j 05* understood that Icontemplate" the use ,of',

my device wherever thesame may be found applicable.

the weight-thereof to a minimumfthe base being formed witha shelf likeportion-2 having'a pair of upwardly projecting members 3 and 4:.Journ'alled in the members 3 and d is a pairof substantially: parallelshafts 6 and 'Zprovided with suitabledriving pulleys 8 and; 9'fixedlysecured thereto-and arranged:

The machine comprises} a base I ,1 of vshell like constructioninorderto-reduce transversely out of alignment;- jThe pulleys 8 and 9amadapted to be driven by means of belts (notjshow'n) 1 to a'v'suitablesource of power." The extremitiesof the shafts'o and 7 project throughthe member i and areeach' provided with a; rotary brush of identical oneof which is shown in detail in Figure V. i r

The end of each shaftis provided with a reducedportion 11 which snuglyreceives a hushing12 adapted tofrotate with the shaft:

by means; of akeyor pin-13, 1 Mounted upo the bushing 12 isa plurality Jof 'sections ..of

brushes -143 fabricated of wirejor other] 1 suitable abraiding,materialwhich: are suit-j ably held in compact arrangement von the'bushingflbyfineans ofla, washer llh and .a i

by means of a nut 18. This particular method nut16. The Completeassembly of thehrushes and bushing 12-are ;fi'xedly'held;onthe shaft ofmounting the brush sections makes it pose-f U sible to quickly andeasilyrreplace any worn.

The brushesl'form, as particularlyshown Y 2i i L f in Figure IV, asupport for an armature A,

having insulating paper A or. other material on its periphery; thearmature being held in engagement with the. brushes bymeans ofa I roller20 or drum made of rubber or other suitable material contacting theperiphery thereof, and which isrotatably journalled in. bearings 22 inan arm 23.. One end ofthe 1' arm I23is, loosely pivoted upon a sha-ft 28and'is provided With'a weight 24, the function of the latter, beingtohold the roller in frictional engagementwith the periphery of thearmature A. The arm 23 is also provided with a handle portion by whichthe operator may elevate the arm and disengage the roller 20 from thearmature to remove the same and insert a new one. Iihave also pro- 7 1vided means whereby the arm 23 may beele V "vated by the operators foot.;'which' means comprises a lever SO-suitably fulcrumed upon theshaft 28,011mm ofthejlever-beingar ranged adjacent the arm '23and having an" 7inwardlyturned portion 31 which is adapted to extend beneath the arm;the other en djof the lever i3 0 being connected by means of a rope orcable; 32 to a suitable operating treadle (not shown). Itwill-beobviousthat a downward ,pullon the cable 32 will oscillate w i vatingthe'latter.

arm 23 from swinging into engagement Wlth the lever '30, bringing theportion "31' thereof into engagement with the-arm thereby elef In orderto prevent the the". revolving brushes -14 wh'en the armature hasjbeenremoved from the 1n achine, 'I have provided suitable stop 27 which-isadapted to engage the lever to limit the downward movement of thearm23fand parts carried thereby. The arm 23 maybe swung to an out-of-theeway position shown in dotted lines inFigure IV. when the machine'is'notin use. Thelroller 20.is adaptedto be driven at a comparativelyslow speed in order *to cause v rotation" of the armature A while in"engage-I I ment with the brushes 14, the driving means comprising asprocket "34; mount-ed upon shaftv 21 carrying the roller 20. 5amisconne'c'ted by meansof achain 35 to a sprocket '36 fixedly mounteduponthe shaft '28 and Shaft 28 is-journalled in bearings in the{upper-extremities of projections 29. form'- ing integral; parts of thebase jFixedly.

mounted upon one-extremityof the sha ft 2:8

isra miter gear 38 meshing with 1 a similar .and smaller-miter gearT39carried upon 7 shaft 40, the 'latter being suitably journalled themember s41 and {42 also forminginte5 I gral parts of the base' 1. Adjacntthe bear,- 1ng 42 is a worm wheel-L44 secure'dlto the shaft-40,;1whichjisadapte'd to; mesh with and be driven by-a wor 46 secured toalongitudi I nally extending shaft 47,1ournal1ed for rotationin1bearings'48, the outer endjif'the' shaft 7 47 carrying a pulley 5Owhich may be con-i necte'd by a suitable belt" (not shown) to a sourceofpower. iR-otationof the shaft 47 operatestodrive the shaft through theworm 46 and worm wheel 44, theshaft 40 in turn driving the sprocket 36through the medium of'the gears 38and 39,lthus causing rotation of: theroller 20:at a greatly reduced 7 speed as compared with the speed-of.rotation.

of the'shaft-47; The shafts 6,? and, 47 are adapted to, bedriven-byseparate driving means so that where several machines of thistype arearran'ged in "batteries they may all be drivenfro-m a 'commonsource of power.

The extending portions-0f the shaft B of the armature .A areadaptedto'receive bush- 7 ings and 56 which, when the armature is inposition;- in thejm'achine, are adapted to projectinto the' vU-shapedguides formed, I

upon members .58; and 59' which are secured to supporting blocks 60 and61,4118 latter being supported-upon and a djustably secured to the shelflike portion 2 of the basel The purpose of the bushings 55 and 56onthear-' mature} shaft B and the adjustablesupports 60 sand; 61 are toprovide suitable means whereby armatures having shafts of varyingdiameters and lengths may be accommodated in this machine. The blocks 60and Glare p IfOVldeClWithvertical bores 65 within which arepositionedpins 66, provided withflanged portions "intermediate vthe ends thereof,

springs 68 "being interposed between] the flanges of'the. pins and the;extremities of;

the boresj65'. The;pur.pose of: the pins 66 yistojautomaticallydisengage the periphery of. V the armature from thebrushes when'thearm upwardly,-- The weight of: the r 23 is swun armaturearm28' and the parts carried thereby is suiiicient to compress thesprings 68' andpermit theperiphery of the armature 1 tofcontact with thebrushes when thearma-v ture is properly positioned within the guides 58and'59r lows Assuming roller 2OYare rota-ting as hereinbefore de-H Iscribedanarmatureis first provi'ded'with the jbushings'55 and 56 andis'then inserted between theguides'58 and 59. 'The'arm' 28 is thenmanipulated to bring the roller 20 into: engagement with the peripheryof thearmav ture, the weight of theparts compressing the springs 68 andpermitting the armature to contact with the, rapidly rotating brushes14. V It willbe obvious that the rapid rotation 1.5 of the brushes'14will abraderor wear'away V the surplus insulating material'overlyingtheexterior'portion's of the armaturete'eth; whiclr hat the a The-operationof the machine is' as folmaterial is comminuted orpul'verizedfand 1 passes downwardlythrough-the"opening 5 in the base tobe' subsequently. carried away by means (notshown). The armature A isper'- mitted to complete 2 or?) revolutions or until the excessinsulating material has been-removed from the periphery thereof The arm23 is then elevated either by manipulationof the handle 25 or thetreadle' operating the ca ble 32, the spring 68 immediately moving thearmature upwardly out ofengagement with the brushes 14. Thearmature maythen be removed and the cycle of operations performed upon anotherarmature'without stopping the machine.

The embodiment of my invention'herein shown and described is to beregarded as illustrative only, and it is to be understood that theinvention is susceptible to variation, modification, and change withinthe spirit and scope of the subjoined claims.

claim and desire to secure by Letters Patent 1. In a machine of thecharacter disclosed, in combination, a frame; movable abrading memberssupported upon said frame; means for yieldingly supporting an armatureadjacent said abrading members; a member engageable with the armaturefor moving the latter into contact with said abrading mem- .bers andcausing rotation of the armature.

2. In a machine of the character disclosed, 1n combinationxa frame; amovable support for an armature; a plurality of abrading.

members carried by said frame; means for holding the armatureinengagement with the abrading members comprising a drum of yieldablematerial; driving means for the drum; means to move the drum away fromdescribed,

in combination a frame, a revolving brush engagement of the armature.

3. In a machine of the character carried by said frame, resilient meansfor holdmg an armature over said brush; a.

weighted member of resilient material pivotally mounted over said brushadapted to retain the armature in engagement with the brush; and meansfor rotating said resilient member. 7 V i r 4. In a machine of thecharacter described,

in combination a frame, a brush carried by said frame; means forrotating said brush;

an arm pivoted upon said frame; a drum of resilient material carried bysaid arm, means for supportmg an armature between said brush and saiddrum, said drum acting to retain the armature in engagement with saidbrush; driving means carried by said pivoted arm for rotating sa1d drumto impart rotat1on to the armature, sa1d driving means adapted tofunction irrespective of the position of said drum; and means forrendering said drum ineifective to rotate the armature.

In testimony whereof, I aflix my signature.

HARRISON H. EATON.

Having described my. invention, what I

